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1、一InformingtheWorld Everyday,thenewsoftheworldisrelayedtopeoplebyover300millioncopiesofdailypapers,over400millionradiosets,andover150milliontelevisionsets.Additionalnewsisshownbymotionpictures,intheatresandcinemasallovertheworld.Asmorepeoplelearnwhattheimportanteventsofthedayare,fewerarestillcon
2、cernedexclusivelywiththeeventsoftheirownhousehold.AstheEnglishwriterJohnDonneputitnearlyfourhundredyearsago,"nomanisanisland."ThisideaismoreappropriatetodaythanitwaswhenDonnelived.Inshort,whereverhelives,amanbelongstosomesociety;andwearebecomingmoreandmoreawarethatwhateverhappensinoneparticulars
3、ocietyaffects,somehow,thelifeanddestinyofallhumanity. Newspapershavebeenpublishedinthemodernworldforaboutfourhundredyears.MostofthenewspapersprintedtodayarereadinEuropeandNorthAmerica.However,soontheymaybereadinallpartsoftheworld,thankstothenewinventionsthatarechangingthetechniquesofnewspaperpu
4、blishing. Electronicsandautomationhavemadeitpossibletoproducepicturesandtextfarmorequicklythanbefore.Photographicreproductioneliminatestheneedfortypeandprintingpresses.Andfewerspecialists,suchastype-setters,areneededtoproduceapaperormagazinebythephoto-offset(照相平板胶印)method.Therefore,thepublishin
5、gofnewspapersandmagazinesbecomesmoreeconomical.Furthermore,photo-copiescanbesentovergreatdistancesnowbymeansoftelevisionchannelsandsatellitessuchasTelstar.Thus,picturescanbebroughttothepublicmorequicklythanpreviously. Machinesthatprepareprintedtextsforphoto-copiesarebeingusedagreatdealtoday.Tho
6、usandsoflettersandfiguresofdifferentsizesandthicknessescannowbearrangedonablackglassdiscthatisonlyeightinchesindiameter,tobeprintedinnegativeform(whiteonablackbackground).Thedisconthemachineturnsconstantlyattherateoftenrevolutionsasecond.Abeamoflightfromaslroboscopic(频闪的)lampshinesonthedesiredle
7、ttersandfiguresforaboutIwo-millionthsofasecond.Thentheimageofthelettersandfiguresthatwereilluminatedisprojectedontoafilmthroughlenses.Thesectionoffilmislargeenoughtoholdtheequivalentofapageoftext.Thereisakeyboardinfrontofthe
